✍️ Text & Writing Tools
Remove repeated lines from a list while preserving the first occurrence.
Clean repeated lines with independent case, surrounding-space, and optional A–Z output controls while preserving first occurrence by default.
Remove repeated lines from pasted text while keeping a predictable first-occurrence order. It is useful for cleaning email-free lists, tags, IDs, search terms, or exported values.
The text stays in the browser while the tool analyzes or transforms it. Review the output before using it in a graded, published, legal, or accessibility-sensitive document.
Last reviewed for accuracy:
Scenario: A list contains blue, red, blue, green, and red on separate lines.
Result: The cleaned output contains blue, red, and green in their original first-seen order.
A set tracks normalized lines and keeps only the first line associated with each matching key.
The matching key can be the exact line or a normalized version depending on selected case and whitespace options. Preserving first occurrence avoids an unexpected re-sort.
Case and surrounding whitespace can be meaningful in identifiers, code, or exported records. The comparison options let you keep exact distinctions or normalize common copy-and-paste noise before duplicate detection.
Not by default. The first occurrence of each unique line remains in relative order unless you enable the separate A–Z option.
The default preserves first-occurrence order. Enable the separate A–Z option only when you also want the unique output alphabetized.